Part of the mystery is solved, but more questions remain about the discovery of a dead man in central Iowa. The Marshall County Sheriff identifies the man whose body was found in a ditch near Marshalltown over the weekend as Mark Kieler of Marshalltown. Authorities say Kieler had been released from the city jail in July after being arrested on charges of theft, unlawful use of a credit card and possession of drug paraphernalia. The cause of death has not been released.